My girlfriend and I had our first intercourse (but that was not the first time for both of us) three weeks ago, then her period came about a week after that. She felt quite an intense pain in her vagina the day after we had sex but the pain slowly subsided as time passes. The problem is, she felt itchy and irritated at her libia as well as around the opening of her vagina during and after her period until now, plus it seems to get worse. There isn't any bumbs or rashes but the libia is slightly reddish and gets even itchier when scratched. It does not give any odor, neither does it have any abnormal discharge (except for a little wetter panties on some days) and she changes her panties everyday.

What are the possible reasons for such discomfort? Is it better for her to see a gynea or a dermatologist? I am rather worried, so please be so kind to reply if you have any advices at all. Thank you so much for your time and considerations.

Cheers,
xxx